Doesn't really seem spoilery to me at all. Alan Wake - and Remedy in general - is very into surreal weirdness and world fuckery. He's mostly talking about audiences being receptive to pushing creative boundaries.
…I think maybe you need to play the first game again.
There is absolutely nothing about the first game that is similar to the world jumping of everything everywhere all at once. There is a single dark place that he ends up in, and otherwise in the real world what he writes comes true.
Did you even read the comments you’re referring to? Do you know anything about the game we’re talking about here? “The Dark Place” and “Ocean” are not spoilers for the sequel, and no one is saying the sequel is going to resemble EEAAO.
Refamiliarize yourself with the source material, and actually read the article you can’t stop popping off about.
The whole shtick is writing becoming real creating multiple realities and you do realize Control with its Alan Wake dlc and Quantum Break exist along with American Nightmare and the DLCs for AW1.
ftfy there is no creating multiple realities in the first game whatsoever. There is a dark place that Thomas Zane is trapped in, and there's a normal world that Alan is in that he's twisting and changing with his writing. Nothing in the mainline DLCs that got remastered suggest otherwise.
Control takes place presumably in the same normal universe as Alan Wake.
Quantum Break could potentially take place in the same universe but is not cannon as Remedy doesn't own the rights to it and also doesn't deal with multiple worlds in any way shape or form, just time jumping.
The first game is about >!Alan Wake slowly realising that while he's saving Bright Falls, he's also imprisoned at the bottom of the lake. He's basically at both places at the the same time, because he's written himself into the story.!<